Nevion AAV-HD-DMUX User Manual
AAV-HD-DMUX(-R)/
AAV-SD-DMUX(-R)
HD/SD analog / digital audio de-embedder
User manual
Rev. 7
P.O. Box 1020, 3204 Sandefjord, Norway – Tel: +47 33 48 99 99 – Fax: +47 33 48 99 98
Nevion Europe AS
www.nevion.com
AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. 7
Rev.
Repl.
Date
Sign
Change description
7 6 2011-11-22
AJM
Updated the optical receiver specifications
6 5 2011-03-08
AA
Updated Declaration of Conformity.
5 4 2009-07-09
MDH
Removed references to inputs in examples. New DIP
switch routing table. 600 ohm backplane option.
4 3 2009-05-26
MDH
Changed table of signal sources P.12
3 2 2008-12-18
MDH
Changed Dip descriptions
2 1 2008-08-26
MDH
Video input manual mode described. Embedder
audio core diagram changed.
1 0 2008-07-10
NBS
Updated formats to company standard
0 - 2007-06-05
MDH
First revision derived from AV-HD-XMUX manual
rev3
Nevion Support
Nevion Europe
P.O. Box 1020
3204 Sandefjord, Norway
Support phone 1: +47 33 48 99 97
Support phone 2: +47 90 60 99 99
E-mail: support@nevion.com
See http://www.nevion.com/support/ for service hours for customer support globally.
Toll free North America: (866) 515-0811
Outside North America: +1 (805) 247-8560
Nevion USA
1600 Emerson Avenue
Oxnard, CA 93033, USA
Revision history
Current revision of this document is the uppermost in the table below.
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AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. 7
Contents
1 Product overview ..................................................................................................... 4
1.1 Audio signal flow ............................................................................................................. 5
1.2 Signal flow ....................................................................................................................... 5
1.3 Data signal ...................................................................................................................... 6
2 Specifications .......................................................................................................... 7
2.1 Measurement conditions.................................................................................................. 7
2.2 General ........................................................................................................................... 7
2.3 Processing....................................................................................................................... 7
2.4 Inputs .............................................................................................................................. 7
2.5 Outputs ............................................................................................................................ 8
3 Configuration ......................................................................................................... 10
3.1 DIP switch and routing ....................................................................................................10
3.2 Other DIP Switches ........................................................................................................12
3.3 GYDA Control .................................................................................................................13
3.4 Data transmission ...........................................................................................................15
4 Connections ........................................................................................................... 17
4.1 Audio connections DB25 ................................................................................................18
4.2 GPI/Data connections 8P8C Jack ...................................................................................18
5 Operation ................................................................................................ ............... 19
5.1 Front panel LEDs............................................................................................................19
5.2 GPI alarms .....................................................................................................................19
6 Laser safety precautions ........................................................................................ 20
General environmental requirements for Nevion equipment..................................... 21
Product Warranty ...................................................................................................... 22
Appendix A Materials declaration and recycling information..................................... 23
EC Declaration of Conformity ................................................................................... 24
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AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. 7
1 Product overview
The only difference between the AAV-SD-DMUX and the AAV-HD-DMUX is that
the latter can also handle HD SDI video.
The rest of the manual will only refer to the AAV-HD-DMUX.
The AAV-HD-DMUX is a highly integrated audio embedding module in the Flashlink range,
offering simultaneous embedding and de-embedding of audio from a digital HD or SD serial
video signal.
The modules can:
AAV-HD-DMUX can handle SD and HD digital uncompressed video.
AAV-SD-DMUX can handle SD digital uncompressed video.
De-embed and embed all groups of audio.
Copy or move audio groups without additional delay.
De-embed 2 AES3 digital audio and non-audio signals.
De-embed 4 analog audio signals.
Apply extra audio delay.
Swap stereo channels.
Make mono or sum from stereo signals.
Have optical input.
Transport asynchronous serial data.
Generate video and audio signals.
De-glitch correctly synchronized switched video.
Figure 1: Module overview
The module has two main processing blocks. One processes the video stream and the
packet data, the other processes the audio. The packet processing core forms a group router
which can route embedded audio between groups without any extra delay.
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AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. 7
The AAV-HD-DMUX audio core is an AES3 stereo audio router. The received embedded
audios are the sources in the router. The embedded output groups and audio outputs are the
destinations. This feature may also be used to perform stereo channel swapping.
Four stereo delay lines are also available in the router with a total combined delay of 1.25s.
Audio processing is possible within each stereo output. The channels may be changed
allowing L/R swapping, mono assignment, summing, MS conversion and phase reversal of
one of the signals.
All embedding and de-embedding is performed with synchronous 48 kHz audio.
The unit may be ordered with optional optical receivers. The optical receiver may be either
the HD single mode PIN or the HD multi mode PIN. Both units will receive both HD and SD
data rates. The module has signal generators for audio and video for test and line up
applications. The internal video generator may be used as a fall-back source that is used if
the both the electrical and the optical input signals fail. This allows uninterrupted
transmission of embedded audio. The user may also configure the module to mute the
outputs if the input signal disappears.
1.1 Audio signal flow
Figure 2: Processing core overview
1.2 Signal flow
Video may be presented on the optical or electrical inputs. The module will switch to the
other input if the module can not lock to a signal. The video is re-clocked and transformed to
parallel video. The parallel video goes into a line buffer which is used to de-glitch the video
when switched on the correct line. No errors are flagged or produced when the video is
switched on the appropriate switching line. All ancillary data, including embedded audio is
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AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. 7
extracted from the video signal. All the packed data is sent to the group router. The deembedded audio is sent to the stereo audio cross-point router.
The audio processing is performed on the stereo router outputs.
Four of the router outputs are connected to the four stereo delay lines. The outputs of the
delay lines are connected to four inputs of the stereo audio router.
The audio signal is delayed by a few samples during de-embedding, re-packeting the audio
and audio processing. Signals that pass through the stereo audio router will be delayed by a
small number of samples. The group router outputs from the de-embedders do not introduce
any additional delay as the audio does not require unpacking and re-packing.
The embedder core embeds either re-packeted audio from the stereo router or the existing
de-embedded audio as configured in the group router.
The embedded audio packets are inserted into the video signal together with the control
packets and any other packets that were present in the original video signal. The video is
serialized and output through the cable and laser drivers.
The audio signals are taken from the outputs of the audio router. Outputs 1&2 are sent to the
audio DACs (digital to analog converters) while output 3&4 are sent to the AES outputs 3&4.
AES outputs 1&2 are extra AES outputs which may be fed with the audio data of either
outputs 1&2 or 3&4.
1.3 Data signal
The data signal is transported using the User bits in one of the embedded audio streams.
De- embedded data is output on the RS485 output and data received at the R422 input is
embedded into the output video. The configuration sets the audio source containing the data
signal to de-embed, the data format to be received on the backplane connector and which
output signal to embed data into.
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AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. 7
Audio Sampling rate
48 kHz
Analog audio output level setting
+18 dBu = 0dBFS
Ambient temperature
25ºC
Power:
+5V DC 0.72A 3.6W
+/-15V DC 0.02A 0.6W
Control:
DIP switches, GYDA system controller.
Monitoring:
Front panel LEDs, GYDA system controller and GPI.
EDH/CRC processing:
Full. Received flags are updated, new CRCs are
calculated.
Boot time:
1 second.
Digital audio outputs:
Conform to AES3-2003
Video inputs and outputs:
Conform to SMPTE 292M-1998
Data input and output:
Conform to EIA RS-485
Video:
des+4+350+256+2+ser video samples = 45.3us
Audio embedding:
2+1+16 audio samples = 19/48000 = 396us
Audio de-embedding:
4+16+1+29 audio samples = 50/48000 = 1.04ms
Embedding GPI mode:
8+4+32 96kHz samples = 44/96000 = 458us
Embedding UART mode:
32+128+17+16 96kHz samples = 193/96000 = 2.01ms
De-embedding GPI mode:
8+32+8 96kHz samples = 44/96000 = 458us
De-embedding UART mode:
8+32+8 96kHz samples = 48/96000 = 458us
Video:
des+8+1024+1024+3+ser video samples = 27.6us
Audio embedding:
2+1+8 = 11/48000 = 833us
Audio de-embedding:
2+8+1+29 = 40/48000 = 229us
Embedding GPI mode:
8+4+16 96kHz samples = 28/96000 = 292us
Embedding UART mode:
16+128+17+16 96kHz samples = 177/96000 = 1.84ms
De-embedding GPI mode:
4+16+8 96kHz samples = 28/96000 = 292us
De-embedding UART mode:
4+16+8 96kHz samples = 28/96000 = 292us
Video Data rate:
270Mbps or 1,485Gbps
Video frame rate:
24p, 25i, 30i, 50p or 60p and pull down rates
Video Data rate:
270Mbps
Video frame rate:
25i and pull down 30i rates
2 Specifications
2.1 Measurement conditions
2.2 General
2.3 Processing
Video latency is variable due to the de-glitcher but the values below apply when the video
signal is first applied.
Other latency values are maximum values.
2.3.1 SD latencies
2.3.2 HD latencies
2.4 Inputs
2.4.1 Electrical video input
AAV-HD-DMUX
AAV-SD-DMUX
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AAV-HD-DMUX(-R)/ AAV-SD-DMUX(-R) Rev. 7
Equalization:
Automatic up to 35dB
Impedance:
75 ohm
Return loss:
>15dB up to 1,5GHz
Signal level:
Nom. 800mV
Connector:
BNC
Optical wavelength:
1200-1620nm ±40 nm
Maximum Optical power:
-3 dBm
Minimum Optical power
HD-SDI:
SD-SDI:
-22dBm
-25dBm
Return loss:
Better than 27 dB.
Maximum reflected power:
4%
Transmission circuit fiber:
Single mode, multi-mode option on request.
Connector:
SC/UPC
RS422:
1
Connector:
8P8C Jack
Packet mode:
Baud rates:
9600 to 115200
Data length:
7 or 8 bits
Parity:
None, odd or even
Stop bits:
1, 1.5 or 2 bits
GPI mode:
Raw data sampling frequency:
93750 Hz
Number of HD/SDI outputs:
1
Connector:
BNC
Impedance:
75 ohm
Return loss:
> 15 dB to1.5GHz
Signal level:
nom. 800mV.
Rise/fall time:
typically 650ps. @270Mbps. < 270ps @1.485Gbps
Number of outputs:
4.
Sampling frequency:
48 kHz.
Differential output impedance:
53 ohms.
Common mode output impedance:
20 kohm.
Connector (C1 backplane):
25 pin D-sub female.
Maximum signal level (0 dBFS):
+24dBu or lower in 0.5 dB steps.
Common mode voltage tolerance:
+50V, -0V
Frequency response:
20 Hz – 20 kHz +/-0.1 dB
Pass-band ripple:
+/- 0.002 dB
Stop band attenuation:
82 dB
Dynamic range1:
Min. 99 dB (A)2;
Typ. 105 dB(A) 0 dBFS = +18dBu
THD+N @ -1 dBFS:
Max. -85 dB, typical -96 dB.
1
2
2.4.2 Optical video input
2.4.3 Data inputs
2.5 Outputs
2.5.1 Electrical video output
2.5.2 Analog audio outputs
|THD+N of -60 dBFS 1 kHz signal| + 60
Dynamic range scales with output full scale level. Minimum result is obtained with 0dBFS = +12dBu
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